Sewing-machine attachment



Dec. 12, 1950 E. 'r. JOHNSON 2,533,467

SEWING MACHINE ATTACHMENT Filed April 18, 1947 Ervirt T. Johns cm.

Patented Dec. 12, i956 UNITED sTATEs PATENT OFFICE Application April 18, 1947, Serial No. 742,262

Claims. 1

This invention relates to a rug making attachment for sewing machines and more especially to an attachment for use in conjunction with sewing machines for forming rows of loops from a strand of yarn or warp and which is adapted to be separately attached to and form a part of a rug.

It is a primary object of the present invention to provide an attachment of extremely simple construction on which yarn or warp may be wound and held distended so that the convolutions thereof may be stitched on a sewing machine to form a row of loops on either side of the stitchmg.

Still another object of the invention is to provide a yarn or warp support through which the needle of a sewing machine may operate and having means for preventing the attachment from being drawn together in response to the pressure of the foot portion of the sewing machine thereon.

Various other objects and advantages of the invention Will hereinafter become more fully apparent from the following description of the drawing, illustrating preferred embodiments thereof, and wherein:

Figure 1 is a fragmentary perspective view of a portion of a sewing machine and showing the attachment in an operative position for use therewith Figure 2 is a top plan view of the attachment and showing the slide section thereof in an extended position;

Figure 3 is a cross sectional view taken substantially along a plane as indicated by the line 3-3 of Figure 2; and

Figure 4 is a view similar to Figure 3 and showing a slightly modified form of the attachment.

The attachment, designated generally 5 and comprising the invention, is illustrated in Figure l in an operative position and in conjunction with a portion of a conventional sewing machine, designated generally 6, including a presser foot 1 ind a needle 8 which reciprocates through the slotted forward end of the presser foot I.

The rug making attachment 5 includes a base 9 formed by an elongated bar which is provided with a longitudinally disposed slot It opening outwardly of one end thereof and extending to adjacent the opposite end. The slot Hi divides the slotted portion of the base to form longitudinally extending substantially parallel and laterally spaced legs H which are provided on their upper sides with recesses I2, which extend the length of said legs II and which open inwardly thereof.

The rug making attachment 5 also includes a bar I3 having undercut side edges l4, extending from end to end thereof for slidably interfitting the recesses l2 and whereby said bar I3 is mounted for sliding movement in the slot l0 longitudinally thereof and is sized and shaped to substantially fill the slot l0 and recesses 12, as seen in Figure 3, when applied thereto.

One of the legs II, on its outer side and adjacent its free end, is provided with a notch [5 in which an end of a strand or yarn or warp I6 is adapted to be anchored and so that the yarn or warp 16 can be wound about the legs H of the base 9 from their outer, to adjacent their inner ends. The opposite end ll of the yarn or Warp I6 is extended longitudinally along the upper side of the wound portion thereof, as seen in Figure 1, and substantially centrally of said portion.

The presser foot '7 of the sewing machine ii is then positioned on the attachment 5 and over the inner end of the wound portion of the yarn or warp iii and directly over the longitudinally extending end I! thereof. The slide bar I3 is then retracted outwardly of the slot 10 and to substantially clear the portion of the slot lli over which the presser foot I is disposed, and the sewing machine 6 is then operated in a conventional manner for stitching the convolutions of the yarn or warp [6 together and intermediate of their ends and through the slot It and for stitching the end H to the upper side thereof. In the operation of the sewing machine, the base 6 will move from right to lert as seen in Figure 1, as the sewing machine stitches along the Wound warp and at the same time the slide it should be withdrawn from the slot Ill ahead of the presser foot and needle and so that said slide bar will be at all times in engagement with portions of the legs H to prevent them from being drawn together by the pressure of the presser foot on the upper side of the wound warp. The end ll, being disposed between the wound portion of the Warp or yarn and presser foot prevents the latter from catching in the loops or convolutions of the yarn. After the wound portion of the warp or yarn has been stitched from end to end thereof, the slide is can be removed to permit the legs I l to yield toward one another slightly and so that the stitched yarn may be drawn off of the free ends of said legs.

In lieu of the over and under cut connection as illustrated in Figure 3, the attachment may be provided with legs Ila having inwardly opening longitudinally extending grooves l8 for slidably receiving the longitudinally extending outwardly projecting ribs or tongues IS the slide bar I3a to provide a tongue and groove connection between said bar and the legs Ila.

Various other modifications and changes are likewise contemplated and may obviously be resorted to, without departing from the spirit or scope of the invention as hereinafter defined by the appended claims.

I claim as my invention:

1. In a rug making attachment for sewing machines, an elongated bar provided with a slot extending from one end to adjacent the opposite end thereof and adapted to have yarn or warp wound on the slotted portion of said bar, a slide bar reciprocably disposed in the slot of said first mentioned bar and sized to fill the slot from end to end thereof when fully inserted therein, said first mentioned bar being adapted to be disposed beneath the presser foot of a sewing machine for positioning the sewing machine needle for stitch ing the wound yarn longitudinally and centrally through the convolutions thereof, both above and beneath said first mentioned bar, and said slide taibei'ng retractable out of said slot ahead of the p'r''sser foot and needle to provide means to prevent lateral contraction of the first mentioned bar responsive to the weight of the presser foot on the yarn or warp wound thereon;

2. An attachment as in claim 1, and means on the side edges of the slide bar and in the opposed edges of the slotted bar which define the sides of the slot for slidably interfitting the slide bar in the slot of said first mentioned hat;

3. An attachment as in claim 1, said slide bar and the portion of the first mentioned bar, engaged thereby, having a lapped joint at either side thereof whereby the slide bar is slidably sup ported on said first mentioned bar.

4. An attachment as in claim 1, said bars hav-' ing tongue and groove connections along each longitudinal edge of the slide bar.

5, an attachment as in claim 1, and means for slidably ifitrfitting the slide bar in the slot of said first mentioned bar, said bars being of the same thickness and being held by said interfitting' means in flush relationship.

ERVIN T. JOHNSON.

REFERENCES CITED The following references are of record in the file or this patent:

UNITED STATES PATENTS 

